Database format resolved centrally in connection pool

[ggovi]

Fix aiming performance improvement in the loading of condition.
The resolution of the database format ( in case of existing tables in the target DB) is done centrally at the first connection. For a given connection string, the db technology is stored and re-used for further connections.

PAckages involved:
CondCore/CondDB
CondCore/DBCommon
CondCore/DBOutputService
CondCore/ORA
CondCore/Utilities

[cmsbuild]

A new Pull Request was created by @ggovi for CMSSW_7_1_X.

Database format resolved centrally in connection pool

It involves the following packages:

CondCore/CondDB
CondCore/DBCommon
CondCore/DBOutputService
CondCore/ORA
CondCore/Utilities

@apfeiffer1, @diguida, @cmsbuild, @nclopezo, @rcastello, @ggovi, @Degano can you please review it and eventually sign? Thanks.
@ghellwig this is something you requested to watch as well.
You can sign-off by replying to this message having '+1' in the first line of your reply.
You can reject by replying to this message having '-1' in the first line of your reply.
@nclopezo, @ktf you are the release manager for this.
You can merge this pull request by typing 'merge' in the first line of your comment.

[apfeiffer1]

+1
assuming Jenkins agrees ...

Thanks, have a nice w/e !

   cheers, andreas

[diguida]

+1
provided Jenkins agrees.

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_1_X IBs unless changes or unless it breaks tests. @nclopezo, @ktf can you please take care of it?

[cmsbuild]

-1
I ran the usual tests and I found errors in the following unit tests:

---> test testDbSession had ERRORS

you can see the results of the tests here:
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-2472/189/summary.html

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_1_X IBs unless changes (but tests are reportedly failing). @nclopezo, @ktf can you please take care of it?

[cmsbuild]

Pull request #2472 was updated. @apfeiffer1, @diguida, @cmsbuild, @nclopezo, @rcastello, @ggovi, @Degano can you please check and sign again.

[cmsbuild]

+1
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-2472/197/summary.html

[apfeiffer1]

+1

[diguida]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_1_X IBs unless changes (tests are also fine). @nclopezo, @ktf can you please take care of it?